diff options
Diffstat (limited to 'backend/xerox_mfp.c')
| -rw-r--r-- | backend/xerox_mfp.c | 1343 |
1 files changed, 1343 insertions, 0 deletions
diff --git a/backend/xerox_mfp.c b/backend/xerox_mfp.c new file mode 100644 index 0000000..2ef7078 --- /dev/null +++ b/backend/xerox_mfp.c @@ -0,0 +1,1343 @@ +/* + * SANE backend for Xerox Phaser 3200MFP + * Copyright 2008 ABC <abc@telekom.ru> + * + * Network Scanners Support + * Copyright 2010 Alexander Kuznetsov <acca(at)cpan.org> + * + * This program is licensed under GPL + SANE exception. + * More info at http://www.sane-project.org/license.html + */ + +#define DEBUG_NOT_STATIC +#define BACKEND_NAME xerox_mfp + +#include "../include/sane/config.h" +#include "../include/lassert.h" +#include <ctype.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <fcntl.h> +#include <math.h> +#include <unistd.h> +#include <sys/time.h> +#include <sys/types.h> +#include "../include/sane/sane.h" +#include "../include/sane/sanei.h" +#include "../include/sane/saneopts.h" +#include "../include/sane/sanei_thread.h" +#include "../include/sane/sanei_usb.h" +#include "../include/sane/sanei_config.h" +#include "../include/sane/sanei_backend.h" +#include "xerox_mfp.h" + +#define BACKEND_BUILD 13 +#define XEROX_CONFIG_FILE "xerox_mfp.conf" + +static const SANE_Device **devlist = NULL; /* sane_get_devices array */ +static struct device *devices_head = NULL; /* sane_get_devices list */ + +enum { TRANSPORT_USB, TRANSPORT_TCP, TRANSPORTS_MAX }; +transport available_transports[TRANSPORTS_MAX] = { + { "usb", usb_dev_request, usb_dev_open, usb_dev_close, usb_configure_device }, + { "tcp", tcp_dev_request, tcp_dev_open, tcp_dev_close, tcp_configure_device }, +}; + +static int resolv_state(int state) +{ + if (state & STATE_DOCUMENT_JAM) + return SANE_STATUS_JAMMED; + if (state & STATE_NO_DOCUMENT) + return SANE_STATUS_NO_DOCS; + if (state & STATE_COVER_OPEN) + return SANE_STATUS_COVER_OPEN; + if (state & STATE_INVALID_AREA) + return SANE_STATUS_INVAL; /* sane_start: implies SANE_INFO_RELOAD_OPTIONS */ + if (state & STATE_WARMING) +#ifdef SANE_STATUS_WARMING_UP + return SANE_STATUS_WARMING_UP; +#else + return SANE_STATUS_DEVICE_BUSY; +#endif + if (state & STATE_LOCKING) +#ifdef SANE_STATUS_HW_LOCKED + return SANE_STATUS_HW_LOCKED; +#else + return SANE_STATUS_JAMMED; +#endif + if (state & ~STATE_NO_ERROR) + return SANE_STATUS_DEVICE_BUSY; + return 0; +} + +static char *str_cmd(int cmd) +{ + switch (cmd) { + case CMD_ABORT: return "ABORT"; + case CMD_INQUIRY: return "INQUIRY"; + case CMD_RESERVE_UNIT: return "RESERVE_UNIT"; + case CMD_RELEASE_UNIT: return "RELEASE_UNIT"; + case CMD_SET_WINDOW: return "SET_WINDOW"; + case CMD_READ: return "READ"; + case CMD_READ_IMAGE: return "READ_IMAGE"; + case CMD_OBJECT_POSITION: return "OBJECT_POSITION"; + } + return "unknown"; +} + +#define MAX_DUMP 70 +static void dbg_dump(struct device *dev) +{ + int i; + char dbuf[MAX_DUMP * 3 + 1], *dptr = dbuf; + int nzlen = dev->reslen; + int dlen = MIN(dev->reslen, MAX_DUMP); + + for (i = dev->reslen - 1; i >= 0; i--, nzlen--) + if (dev->res[i] != 0) + break; + + dlen = MIN(dlen, nzlen + 1); + + for (i = 0; i < dlen; i++, dptr += 3) + sprintf(dptr, " %02x", dev->res[i]); + + DBG (5, "[%lu]%s%s\n", (u_long)dev->reslen, dbuf, + (dlen < (int)dev->reslen)? "..." : ""); +} + +/* one command to device */ +/* return 0: on error, 1: success */ +static int dev_command (struct device *dev, SANE_Byte * cmd, size_t reqlen) +{ + SANE_Status status; + size_t sendlen = cmd[3] + 4; + SANE_Byte *res = dev->res; + + + assert (reqlen <= sizeof (dev->res)); /* requested len */ + dev->reslen = sizeof (dev->res); /* doing full buffer to flush stalled commands */ + + if (cmd[2] == CMD_SET_WINDOW) { + /* Set Window have wrong packet length, huh. */ + sendlen = 25; + } + + if (cmd[2] == CMD_READ_IMAGE) { + /* Read Image is raw data, don't need to read response */ + res = NULL; + } + + dev->state = 0; + DBG (4, ":: dev_command(%s[%#x], %lu)\n", str_cmd(cmd[2]), cmd[2], + (u_long)reqlen); + status = dev->io->dev_request(dev, cmd, sendlen, res, &dev->reslen); + if (status != SANE_STATUS_GOOD) { + DBG (1, "%s: dev_request: %s\n", __FUNCTION__, sane_strstatus (status)); + dev->state = SANE_STATUS_IO_ERROR; + return 0; + } + + if (!res) { + /* if not need response just return success */ + return 1; + } + + /* normal command reply, some sanity checking */ + if (dev->reslen < reqlen) { + DBG (1, "%s: illegal response len %lu, need %lu\n", + __FUNCTION__, (u_long)dev->reslen, (u_long)reqlen); + dev->state = SANE_STATUS_IO_ERROR; + return 0; + } else { + size_t pktlen; /* len specified in packet */ + + if (DBG_LEVEL > 3) + dbg_dump(dev); + + if (dev->res[0] != RES_CODE) { + DBG (2, "%s: illegal data header %02x\n", __FUNCTION__, dev->res[0]); + dev->state = SANE_STATUS_IO_ERROR; + return 0; + } + pktlen = dev->res[2] + 3; + if (dev->reslen != pktlen) { + DBG (2, "%s: illegal response len %lu, should be %lu\n", + __FUNCTION__, (u_long)pktlen, (u_long)dev->reslen); + dev->state = SANE_STATUS_IO_ERROR; + return 0; + } + if (dev->reslen > reqlen) + DBG (2, "%s: too big packet len %lu, need %lu\n", + __FUNCTION__, (u_long)dev->reslen, (u_long)reqlen); + } + + dev->state = 0; + if (cmd[2] == CMD_SET_WINDOW || + cmd[2] == CMD_OBJECT_POSITION || + cmd[2] == CMD_READ || + cmd[2] == CMD_RESERVE_UNIT) { + if (dev->res[1] == STATUS_BUSY) + dev->state = SANE_STATUS_DEVICE_BUSY; + else if (dev->res[1] == STATUS_CANCEL) + dev->state = SANE_STATUS_CANCELLED; + else if (dev->res[1] == STATUS_CHECK) + dev->state = resolv_state((cmd[2] == CMD_READ)? + (dev->res[12] << 8 | dev->res[13]) : + (dev->res[4] << 8 | dev->res[5])); + + if (dev->state) + DBG (3, "%s(%s[%#x]): => %d: %s\n", + __FUNCTION__, str_cmd(cmd[2]), cmd[2], + dev->state, sane_strstatus(dev->state)); + } + + return 1; +} + +/* one short command to device */ +static int dev_cmd (struct device *dev, SANE_Byte command) +{ + SANE_Byte cmd[4] = { REQ_CODE_A, REQ_CODE_B }; + cmd[2] = command; + return dev_command (dev, cmd, (command == CMD_INQUIRY)? 70 : 32); +} + +/* stop scanning operation. return previous status */ +static SANE_Status dev_stop(struct device *dev) +{ + int state = dev->state; + + DBG (3, "%s: %p, scanning %d, reserved %d\n", __FUNCTION__, + (void *)dev, dev->scanning, dev->reserved); + dev->scanning = 0; + + /* release */ + if (!dev->reserved) + return state; + dev->reserved = 0; + dev_cmd(dev, CMD_RELEASE_UNIT); + DBG (3, "total image %d*%d size %d (win %d*%d), %d*%d %d data: %d, out %d bytes\n", + dev->para.pixels_per_line, dev->para.lines, + dev->total_img_size, + dev->win_width, dev->win_len, + dev->pixels_per_line, dev->ulines, dev->blocks, + dev->total_data_size, dev->total_out_size); + dev->state = state; + return state; +} + +SANE_Status ret_cancel(struct device *dev, SANE_Status ret) +{ + dev_cmd(dev, CMD_ABORT); + if (dev->scanning) { + dev_stop(dev); + dev->state = SANE_STATUS_CANCELLED; + } + return ret; +} + +static int cancelled(struct device *dev) +{ + if (dev->cancel) + return ret_cancel(dev, 1); + return 0; +} + +/* issue command and wait until scanner is not busy */ +/* return 0 on error/blocking, 1 is ok and ready */ +static int dev_cmd_wait(struct device *dev, int cmd) +{ + int sleeptime = 10; + + do { + if (cancelled(dev)) + return 0; + if (!dev_cmd(dev, cmd)) { + dev->state = SANE_STATUS_IO_ERROR; + return 0; + } else if (dev->state) { + if (dev->state != SANE_STATUS_DEVICE_BUSY) + return 0; + else { + if (dev->non_blocking) { + dev->state = SANE_STATUS_GOOD; + return 0; + } else { + if (sleeptime > 1000) + sleeptime = 1000; + DBG (4, "(%s) sleeping(%d ms).. [%x %x]\n", + str_cmd(cmd), sleeptime, dev->res[4], dev->res[5]); + usleep(sleeptime * 1000); + if (sleeptime < 1000) + sleeptime *= (sleeptime < 100)? 10 : 2; + } + } /* BUSY */ + } + } while (dev->state == SANE_STATUS_DEVICE_BUSY); + + return 1; +} + +static int inq_dpi_bits[] = { + 75, 150, 0, 0, + 200, 300, 0, 0, + 600, 0, 0, 1200, + 100, 0, 0, 2400, + 0, 4800, 0, 9600 +}; + +static int res_dpi_codes[] = { + 75, 0, 150, 0, + 0, 300, 0, 600, + 1200, 200, 100, 2400, + 4800, 9600 +}; + +static int SANE_Word_sort(const void * a, const void * b) +{ + return *(const SANE_Word *)a - *(const SANE_Word *)b; +} + +/* resolve inquired dpi list to dpi_list array */ +static void resolv_inq_dpi(struct device *dev) +{ + unsigned int i; + int res = dev->resolutions; + + assert(sizeof(inq_dpi_bits) < sizeof(dev->dpi_list)); + for (i = 0; i < sizeof(inq_dpi_bits) / sizeof(int); i++) + if (inq_dpi_bits[i] && (res & (1 << i))) + dev->dpi_list[++dev->dpi_list[0]] = inq_dpi_bits[i]; + qsort(&dev->dpi_list[1], dev->dpi_list[0], sizeof(SANE_Word), SANE_Word_sort); +} + +static unsigned int dpi_to_code(int dpi) +{ + unsigned int i; + + for (i = 0; i < sizeof(res_dpi_codes) / sizeof(int); i++) { + if (dpi == res_dpi_codes[i]) + return i; + } + return 0; +} + +static int string_match_index(const SANE_String_Const s[], SANE_String m) +{ + int i; + + for (i = 0; *s; i++) { + SANE_String_Const x = *s++; + if (strcasecmp(x, m) == 0) + return i; + } + return 0; +} + +static SANE_String string_match(const SANE_String_Const s[], SANE_String m) +{ + return UNCONST(s[string_match_index(s, m)]); +} + +static size_t max_string_size (SANE_String_Const s[]) +{ + size_t max = 0; + + while (*s) { + size_t size = strlen(*s++) + 1; + if (size > max) + max = size; + } + return max; +} + +static SANE_String_Const doc_sources[] = { + "Flatbed", "ADF", "Auto", NULL +}; + +static int doc_source_to_code[] = { + 0x40, 0x20, 0x80 +}; + +static SANE_String_Const scan_modes[] = { + SANE_VALUE_SCAN_MODE_LINEART, + SANE_VALUE_SCAN_MODE_HALFTONE, + SANE_VALUE_SCAN_MODE_GRAY, + SANE_VALUE_SCAN_MODE_COLOR, + NULL +}; + +static int scan_mode_to_code[] = { + 0x00, 0x01, 0x03, 0x05 +}; + +static SANE_Range threshold = { + SANE_FIX(30), SANE_FIX(70), SANE_FIX(10) +}; + +static void reset_options(struct device *dev) +{ + dev->val[OPT_RESOLUTION].w = 150; + dev->val[OPT_MODE].s = string_match(scan_modes, SANE_VALUE_SCAN_MODE_COLOR); + + /* if docs loaded in adf use it as default source, flatbed oterwise */ + dev->val[OPT_SOURCE].s = UNCONST(doc_sources[(dev->doc_loaded)? 1 : 0]); + + dev->val[OPT_THRESHOLD].w = SANE_FIX(50); + + /* this is reported maximum window size, will be fixed later */ + dev->win_x_range.min = SANE_FIX(0); + dev->win_x_range.max = SANE_FIX((double)dev->max_win_width / PNT_PER_MM); + dev->win_x_range.quant = SANE_FIX(1); + dev->win_y_range.min = SANE_FIX(0); + dev->win_y_range.max = SANE_FIX((double)dev->max_win_len / PNT_PER_MM); + dev->win_y_range.quant = SANE_FIX(1); + dev->val[OPT_SCAN_TL_X].w = dev->win_x_range.min; + dev->val[OPT_SCAN_TL_Y].w = dev->win_y_range.min; + dev->val[OPT_SCAN_BR_X].w = dev->win_x_range.max; + dev->val[OPT_SCAN_BR_Y].w = dev->win_y_range.max; +} + +static void init_options(struct device *dev) +{ + int i; + + for (i = 0; i < NUM_OPTIONS; i++) { + dev->opt[i].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT; + dev->opt[i].size = sizeof(SANE_Word); + dev->opt[i].type = SANE_TYPE_FIXED; + dev->val[i].s = NULL; + } + + dev->opt[OPT_NUMOPTIONS].name = SANE_NAME_NUM_OPTIONS; + dev->opt[OPT_NUMOPTIONS].title = SANE_TITLE_NUM_OPTIONS; + dev->opt[OPT_NUMOPTIONS].desc = SANE_DESC_NUM_OPTIONS; + dev->opt[OPT_NUMOPTIONS].type = SANE_TYPE_INT; + dev->opt[OPT_NUMOPTIONS].cap = SANE_CAP_SOFT_DETECT; + dev->val[OPT_NUMOPTIONS].w = NUM_OPTIONS; + + dev->opt[OPT_GROUP_STD].name = SANE_NAME_STANDARD; + dev->opt[OPT_GROUP_STD].title = SANE_TITLE_STANDARD; + dev->opt[OPT_GROUP_STD].desc = SANE_DESC_STANDARD; + dev->opt[OPT_GROUP_STD].type = SANE_TYPE_GROUP; + dev->opt[OPT_GROUP_STD].cap = 0; + + dev->opt[OPT_RESOLUTION].name = SANE_NAME_SCAN_RESOLUTION; + dev->opt[OPT_RESOLUTION].title = SANE_TITLE_SCAN_RESOLUTION; + dev->opt[OPT_RESOLUTION].desc = SANE_DESC_SCAN_RESOLUTION; + dev->opt[OPT_RESOLUTION].type = SANE_TYPE_INT; + dev->opt[OPT_RESOLUTION].cap = SANE_CAP_SOFT_SELECT|SANE_CAP_SOFT_DETECT; + dev->opt[OPT_RESOLUTION].unit = SANE_UNIT_DPI; + dev->opt[OPT_RESOLUTION].constraint_type = SANE_CONSTRAINT_WORD_LIST; + dev->opt[OPT_RESOLUTION].constraint.word_list = dev->dpi_list; + + dev->opt[OPT_MODE].name = SANE_NAME_SCAN_MODE; + dev->opt[OPT_MODE].title = SANE_TITLE_SCAN_MODE; + dev->opt[OPT_MODE].desc = SANE_DESC_SCAN_MODE; + dev->opt[OPT_MODE].type = SANE_TYPE_STRING; + dev->opt[OPT_MODE].size = max_string_size(scan_modes); + dev->opt[OPT_MODE].cap = SANE_CAP_SOFT_SELECT|SANE_CAP_SOFT_DETECT; + dev->opt[OPT_MODE].constraint_type = SANE_CONSTRAINT_STRING_LIST; + dev->opt[OPT_MODE].constraint.string_list = scan_modes; + + dev->opt[OPT_THRESHOLD].name = SANE_NAME_HIGHLIGHT; + dev->opt[OPT_THRESHOLD].title = SANE_TITLE_THRESHOLD; + dev->opt[OPT_THRESHOLD].desc = SANE_DESC_THRESHOLD; + dev->opt[OPT_THRESHOLD].unit = SANE_UNIT_PERCENT; + dev->opt[OPT_THRESHOLD].cap = SANE_CAP_SOFT_SELECT|SANE_CAP_SOFT_DETECT; + dev->opt[OPT_THRESHOLD].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_THRESHOLD].constraint.range = &threshold; + + dev->opt[OPT_SOURCE].name = SANE_NAME_SCAN_SOURCE; + dev->opt[OPT_SOURCE].title = SANE_TITLE_SCAN_SOURCE; + dev->opt[OPT_SOURCE].desc = SANE_DESC_SCAN_SOURCE; + dev->opt[OPT_SOURCE].type = SANE_TYPE_STRING; + dev->opt[OPT_SOURCE].size = max_string_size(doc_sources); + dev->opt[OPT_SOURCE].cap = SANE_CAP_SOFT_SELECT|SANE_CAP_SOFT_DETECT; + dev->opt[OPT_SOURCE].constraint_type = SANE_CONSTRAINT_STRING_LIST; + dev->opt[OPT_SOURCE].constraint.string_list = doc_sources; + + dev->opt[OPT_GROUP_GEO].name = SANE_NAME_GEOMETRY; + dev->opt[OPT_GROUP_GEO].title = SANE_TITLE_GEOMETRY; + dev->opt[OPT_GROUP_GEO].desc = SANE_DESC_GEOMETRY; + dev->opt[OPT_GROUP_GEO].type = SANE_TYPE_GROUP; + dev->opt[OPT_GROUP_GEO].cap = 0; + + dev->opt[OPT_SCAN_TL_X].name = SANE_NAME_SCAN_TL_X; + dev->opt[OPT_SCAN_TL_X].title = SANE_TITLE_SCAN_TL_X; + dev->opt[OPT_SCAN_TL_X].desc = SANE_DESC_SCAN_TL_X; + dev->opt[OPT_SCAN_TL_X].unit = SANE_UNIT_MM; + dev->opt[OPT_SCAN_TL_X].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_SCAN_TL_X].constraint.range = &dev->win_x_range; + + dev->opt[OPT_SCAN_TL_Y].name = SANE_NAME_SCAN_TL_Y; + dev->opt[OPT_SCAN_TL_Y].title = SANE_TITLE_SCAN_TL_Y; + dev->opt[OPT_SCAN_TL_Y].desc = SANE_DESC_SCAN_TL_Y; + dev->opt[OPT_SCAN_TL_Y].unit = SANE_UNIT_MM; + dev->opt[OPT_SCAN_TL_Y].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_SCAN_TL_Y].constraint.range = &dev->win_y_range; + + dev->opt[OPT_SCAN_BR_X].name = SANE_NAME_SCAN_BR_X; + dev->opt[OPT_SCAN_BR_X].title = SANE_TITLE_SCAN_BR_X; + dev->opt[OPT_SCAN_BR_X].desc = SANE_DESC_SCAN_BR_X; + dev->opt[OPT_SCAN_BR_X].unit = SANE_UNIT_MM; + dev->opt[OPT_SCAN_BR_X].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_SCAN_BR_X].constraint.range = &dev->win_x_range; + + dev->opt[OPT_SCAN_BR_Y].name = SANE_NAME_SCAN_BR_Y; + dev->opt[OPT_SCAN_BR_Y].title = SANE_TITLE_SCAN_BR_Y; + dev->opt[OPT_SCAN_BR_Y].desc = SANE_DESC_SCAN_BR_Y; + dev->opt[OPT_SCAN_BR_Y].unit = SANE_UNIT_MM; + dev->opt[OPT_SCAN_BR_Y].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_SCAN_BR_Y].constraint.range = &dev->win_y_range; +} + +/* fill parameters from options */ +static void set_parameters(struct device *dev) +{ + double px_to_len; + + dev->para.last_frame = SANE_TRUE; + dev->para.lines = -1; + px_to_len = 1200.0 / dev->val[OPT_RESOLUTION].w; +#define BETTER_BASEDPI 1 + /* tests prove that 1200dpi base is very inexact + * so I calculated better values for each axis */ +#if BETTER_BASEDPI + px_to_len = 1180.0 / dev->val[OPT_RESOLUTION].w; +#endif + dev->para.pixels_per_line = dev->win_width / px_to_len; + dev->para.bytes_per_line = dev->para.pixels_per_line; +#if BETTER_BASEDPI + px_to_len = 1213.9 / dev->val[OPT_RESOLUTION].w; +#endif + dev->para.lines = dev->win_len / px_to_len; + if (dev->composition == MODE_LINEART || + dev->composition == MODE_HALFTONE) { + dev->para.format = SANE_FRAME_GRAY; + dev->para.depth = 1; + dev->para.bytes_per_line = (dev->para.pixels_per_line + 7) / 8; + } else if (dev->composition == MODE_GRAY8) { + dev->para.format = SANE_FRAME_GRAY; + dev->para.depth = 8; + dev->para.bytes_per_line = dev->para.pixels_per_line; + } else if (dev->composition == MODE_RGB24) { + dev->para.format = SANE_FRAME_RGB; + dev->para.depth = 8; + dev->para.bytes_per_line *= 3; + } else { + /* this will never happen */ + DBG (1, "%s: impossible image composition %d\n", + __FUNCTION__, dev->composition); + dev->para.format = SANE_FRAME_GRAY; + dev->para.depth = 8; + } +} + +/* resolve all options related to scan window */ +/* called after option changed and in set_window */ +static int fix_window(struct device *dev) +{ + double win_width_mm, win_len_mm; + int i; + int threshold = SANE_UNFIX(dev->val[OPT_THRESHOLD].w); + + dev->resolution = dpi_to_code(dev->val[OPT_RESOLUTION].w); + dev->composition = scan_mode_to_code[string_match_index(scan_modes, dev->val[OPT_MODE].s)]; + + if (dev->composition == MODE_LINEART || + dev->composition == MODE_HALFTONE) { + dev->opt[OPT_THRESHOLD].cap &= ~SANE_CAP_INACTIVE; + } else { + dev->opt[OPT_THRESHOLD].cap |= SANE_CAP_INACTIVE; + } + if (threshold < 30) { + dev->val[OPT_THRESHOLD].w = SANE_FIX(30); + } else if (threshold > 70) { + dev->val[OPT_THRESHOLD].w = SANE_FIX(70); + } + threshold = SANE_UNFIX(dev->val[OPT_THRESHOLD].w); + dev->threshold = (threshold - 30) / 10; + dev->val[OPT_THRESHOLD].w = SANE_FIX(dev->threshold * 10 + 30); + + dev->doc_source = doc_source_to_code[string_match_index(doc_sources, dev->val[OPT_SOURCE].s)]; + + /* max window len is dependent of document source */ + if (dev->doc_source == DOC_FLATBED || + (dev->doc_source == DOC_AUTO && !dev->doc_loaded)) + dev->max_len = dev->max_len_fb; + else + dev->max_len = dev->max_len_adf; + + /* parameters */ + dev->win_y_range.max = SANE_FIX((double)dev->max_len / PNT_PER_MM); + + /* window sanity checking */ + for (i = OPT_SCAN_TL_X; i <= OPT_SCAN_BR_Y; i++) { + if (dev->val[i].w < dev->opt[i].constraint.range->min) + dev->val[i].w = dev->opt[i].constraint.range->min; + if (dev->val[i].w > dev->opt[i].constraint.range->max) + dev->val[i].w = dev->opt[i].constraint.range->max; + } + + if (dev->val[OPT_SCAN_TL_X].w > dev->val[OPT_SCAN_BR_X].w) + SWAP_Word(dev->val[OPT_SCAN_TL_X].w, dev->val[OPT_SCAN_BR_X].w); + if (dev->val[OPT_SCAN_TL_Y].w > dev->val[OPT_SCAN_BR_Y].w) + SWAP_Word(dev->val[OPT_SCAN_TL_Y].w, dev->val[OPT_SCAN_BR_Y].w); + + /* recalculate millimeters to inches */ + dev->win_off_x = SANE_UNFIX(dev->val[OPT_SCAN_TL_X].w) / MM_PER_INCH; + dev->win_off_y = SANE_UNFIX(dev->val[OPT_SCAN_TL_Y].w) / MM_PER_INCH; + + /* calc win size in mm */ + win_width_mm = SANE_UNFIX(dev->val[OPT_SCAN_BR_X].w) - + SANE_UNFIX(dev->val[OPT_SCAN_TL_X].w); + win_len_mm = SANE_UNFIX(dev->val[OPT_SCAN_BR_Y].w) - + SANE_UNFIX(dev->val[OPT_SCAN_TL_Y].w); + /* convert mm to 1200 dpi points */ + dev->win_width = (int)(win_width_mm * PNT_PER_MM); + dev->win_len = (int)(win_len_mm * PNT_PER_MM); + + /* don't scan if window is zero size */ + if (!dev->win_width || !dev->win_len) { + /* "The scan cannot be started with the current set of options." */ + dev->state = SANE_STATUS_INVAL; + return 0; + } + + return 1; +} + +static int dev_set_window (struct device *dev) +{ + SANE_Byte cmd[0x19] = { + REQ_CODE_A, REQ_CODE_B, CMD_SET_WINDOW, 0x13, MSG_SCANNING_PARAM + }; + + if (!fix_window(dev)) + return 0; + + cmd[0x05] = dev->win_width >> 24; + cmd[0x06] = dev->win_width >> 16; + cmd[0x07] = dev->win_width >> 8; + cmd[0x08] = dev->win_width; + cmd[0x09] = dev->win_len >> 24; + cmd[0x0a] = dev->win_len >> 16; + cmd[0x0b] = dev->win_len >> 8; + cmd[0x0c] = dev->win_len; + cmd[0x0d] = dev->resolution; /* x */ + cmd[0x0e] = dev->resolution; /* y */ + cmd[0x0f] = (SANE_Byte)floor(dev->win_off_x); + cmd[0x10] = (SANE_Byte)((dev->win_off_x - floor(dev->win_off_x)) * 100); + cmd[0x11] = (SANE_Byte)floor(dev->win_off_y); + cmd[0x12] = (SANE_Byte)((dev->win_off_y - floor(dev->win_off_y)) * 100); + cmd[0x13] = dev->composition; + cmd[0x16] = dev->threshold; + cmd[0x17] = dev->doc_source; + + DBG (5, "OFF xi: %02x%02x yi: %02x%02x," + " WIN xp: %02x%02x%02x%02x yp %02x%02x%02x%02x," + " MAX %08x %08x\n", + cmd[0x0f], cmd[0x10], cmd[0x11], cmd[0x12], + cmd[0x05], cmd[0x06], cmd[0x07], cmd[0x08], + cmd[0x09], cmd[0x0a], cmd[0x0b], cmd[0x0c], + dev->max_win_width, dev->max_win_len); + + return dev_command (dev, cmd, 32); +} + +static SANE_Status +dev_inquiry (struct device *dev) +{ + SANE_Byte *ptr; + SANE_Char *optr, *xptr; + + if (!dev_cmd (dev, CMD_INQUIRY)) + return SANE_STATUS_IO_ERROR; + ptr = dev->res; + if (ptr[3] != MSG_PRODUCT_INFO) { + DBG (1, "%s: illegal INQUIRY response %02x\n", __FUNCTION__, ptr[3]); + return SANE_STATUS_IO_ERROR; + } + + /* parse reported manufacturer/product names */ + dev->sane.vendor = optr = (SANE_Char *) malloc (33); + for (ptr += 4; ptr < &dev->res[0x24] && *ptr && *ptr != ' ';) + *optr++ = *ptr++; + *optr++ = 0; + + for (; ptr < &dev->res[0x24] && (!*ptr || *ptr == ' '); ptr++) + /* skip spaces */; + + dev->sane.model = optr = (SANE_Char *) malloc (33); + xptr = optr; /* is last non space character + 1 */ + for (; ptr < &dev->res[0x24] && *ptr;) { + if (*ptr != ' ') + xptr = optr + 1; + *optr++ = *ptr++; + } + *optr++ = 0; + *xptr = 0; + + DBG (1, "%s: found %s/%s\n", __FUNCTION__, dev->sane.vendor, dev->sane.model); + dev->sane.type = strdup ("multi-function peripheral"); + + dev->resolutions = dev->res[0x37] << 16 | + dev->res[0x24] << 8 | + dev->res[0x25]; + dev->compositions = dev->res[0x27]; + dev->max_win_width = dev->res[0x28] << 24 | + dev->res[0x29] << 16 | + dev->res[0x2a] << 8 | + dev->res[0x2b]; + dev->max_win_len = dev->res[0x2c] << 24 | + dev->res[0x2d] << 16 | + dev->res[0x2e] << 8 | + dev->res[0x2f]; + dev->max_len_adf = dev->res[0x38] << 24 | + dev->res[0x39] << 16 | + dev->res[0x3a] << 8 | + dev->res[0x3b]; + dev->max_len_fb = dev->res[0x3c] << 24 | + dev->res[0x3d] << 16 | + dev->res[0x3e] << 8 | + dev->res[0x3f]; + dev->line_order = dev->res[0x31]; + dev->doc_loaded = (dev->res[0x35] == 0x02) && + (dev->res[0x26] & 0x03); + + init_options(dev); + reset_options(dev); + fix_window(dev); + set_parameters(dev); + resolv_inq_dpi(dev); + + return SANE_STATUS_GOOD; +} + +const SANE_Option_Descriptor * +sane_get_option_descriptor (SANE_Handle h, SANE_Int opt) +{ + struct device *dev = h; + + DBG (3, "%s: %p, %d\n", __FUNCTION__, h, opt); + if (opt >= NUM_OPTIONS || opt < 0) + return NULL; + return &dev->opt[opt]; +} + +SANE_Status +sane_control_option (SANE_Handle h, SANE_Int opt, SANE_Action act, + void *val, SANE_Word * info) +{ + struct device *dev = h; + + DBG (3, "%s: %p, %d, <%d>, %p, %p\n", __FUNCTION__, h, opt, act, val, (void *)info); + if (!dev || opt >= NUM_OPTIONS || opt < 0) + return SANE_STATUS_INVAL; + + if (info) + *info = 0; + + if (act == SANE_ACTION_GET_VALUE) { /* GET */ + if (dev->opt[opt].type == SANE_TYPE_STRING) + strcpy(val, dev->val[opt].s); + else + *(SANE_Word *)val = dev->val[opt].w; + } else if (act == SANE_ACTION_SET_VALUE) { /* SET */ + SANE_Parameters xpara = dev->para; + SANE_Option_Descriptor xopt[NUM_OPTIONS]; + Option_Value xval[NUM_OPTIONS]; + int i; + + if (dev->opt[opt].constraint_type == SANE_CONSTRAINT_STRING_LIST) { + dev->val[opt].s = string_match(dev->opt[opt].constraint.string_list, val); + if (info && strcasecmp(dev->val[opt].s, val)) + *info |= SANE_INFO_INEXACT; + } else if (opt == OPT_RESOLUTION) + dev->val[opt].w = res_dpi_codes[dpi_to_code(*(SANE_Word *)val)]; + else + dev->val[opt].w = *(SANE_Word *)val; + + memcpy(&xopt, &dev->opt, sizeof(xopt)); + memcpy(&xval, &dev->val, sizeof(xval)); + fix_window(dev); + set_parameters(dev); + + /* check for side effects */ + if (info) { + if (memcmp(&xpara, &dev->para, sizeof(xpara))) + *info |= SANE_INFO_RELOAD_PARAMS; + if (memcmp(&xopt, &dev->opt, sizeof(xopt))) + *info |= SANE_INFO_RELOAD_OPTIONS; + for (i = 0; i < NUM_OPTIONS; i++) + if (xval[i].w != dev->val[i].w) { + if (i == opt) + *info |= SANE_INFO_INEXACT; + else + *info |= SANE_INFO_RELOAD_OPTIONS; + } + } + } + + DBG (4, "%s: %d, <%d> => %08x, %x\n", __FUNCTION__, opt, act, + val? *(SANE_Word *)val : 0, info? *info : 0); + return SANE_STATUS_GOOD; +} + +static void +dev_free (struct device *dev) +{ + if (!dev) + return; + + if (dev->sane.name) + free (UNCONST(dev->sane.name)); + if (dev->sane.vendor) + free (UNCONST(dev->sane.vendor)); + if (dev->sane.model) + free (UNCONST(dev->sane.model)); + if (dev->sane.type) + free (UNCONST(dev->sane.type)); + if (dev->data) + free(dev->data); + memset (dev, 0, sizeof (*dev)); + free (dev); +} + +static void +free_devices (void) +{ + int i; + struct device *next; + struct device *dev; + + if (devlist) { + free (devlist); + devlist = NULL; + } + for (i = 0, dev = devices_head; dev; dev = next) { + next = dev->next; + dev_free (dev); + } + devices_head = NULL; +} + +static transport *tr_from_devname(SANE_String_Const devname) +{ + if (strncmp("tcp", devname, 3) == 0) + return &available_transports[TRANSPORT_TCP]; + return &available_transports[TRANSPORT_USB]; +} + +static SANE_Status +list_one_device (SANE_String_Const devname) +{ + struct device *dev; + SANE_Status status; + transport *tr; + + DBG (4, "%s: %s\n", __FUNCTION__, devname); + + for (dev = devices_head; dev; dev = dev->next) { + if (strcmp (dev->sane.name, devname) == 0) + return SANE_STATUS_GOOD; + } + + tr = tr_from_devname(devname); + + dev = calloc (1, sizeof (struct device)); + if (dev == NULL) + return SANE_STATUS_NO_MEM; + + dev->sane.name = strdup (devname); + dev->io = tr; + status = tr->dev_open (dev); + if (status != SANE_STATUS_GOOD) { + dev_free (dev); + return status; + } + +/* status = dev_cmd (dev, CMD_ABORT);*/ + status = dev_inquiry (dev); + tr->dev_close (dev); + if (status != SANE_STATUS_GOOD) { + DBG (1, "%s: dev_inquiry(%s): %s\n", __FUNCTION__, + dev->sane.name, sane_strstatus (status)); + dev_free (dev); + return status; + } + + /* good device, add it to list */ + dev->next = devices_head; + devices_head = dev; + return SANE_STATUS_GOOD; +} + +/* SANE API ignores return code of this callback */ +static SANE_Status +list_conf_devices (UNUSED (SANEI_Config * config), const char *devname) +{ + return tr_from_devname(devname)->configure_device(devname, list_one_device); +} + +SANE_Status +sane_init (SANE_Int * version_code, SANE_Auth_Callback cb) +{ + DBG_INIT (); + DBG (2, "sane_init: Xerox backend (build %d), version %s null, authorize %s null\n", BACKEND_BUILD, + (version_code) ? "!=" : "==", (cb) ? "!=" : "=="); + + if (version_code) + *version_code = SANE_VERSION_CODE (V_MAJOR, V_MINOR, BACKEND_BUILD); + + sanei_usb_init (); + return SANE_STATUS_GOOD; +} + +void +sane_exit (void) +{ + struct device *dev; + + for (dev = devices_head; dev; dev = dev->next) + if (dev->dn != -1) + sane_close(dev); /* implies flush */ + + free_devices (); +} + +SANE_Status +sane_get_devices (const SANE_Device *** device_list, SANE_Bool local) +{ + SANEI_Config config; + struct device *dev; + int dev_count; + int i; + + DBG (3, "%s: %p, %d\n", __FUNCTION__, (const void *)device_list, local); + + if (devlist) { + if (device_list) + *device_list = devlist; + return SANE_STATUS_GOOD; + } + + free_devices (); + + config.count = 0; + config.descriptors = NULL; + config.values = NULL; + sanei_configure_attach (XEROX_CONFIG_FILE, &config, list_conf_devices); + + for (dev_count = 0, dev = devices_head; dev; dev = dev->next) + dev_count++; + + devlist = malloc ((dev_count + 1) * sizeof (*devlist)); + if (!devlist) + { + DBG (1, "%s: malloc: no memory\n", __FUNCTION__); + return SANE_STATUS_NO_MEM; + } + + for (i = 0, dev = devices_head; dev; dev = dev->next) + devlist[i++] = &dev->sane; + devlist[i++] = NULL; + + if (device_list) + *device_list = devlist; + return SANE_STATUS_GOOD; +} + +void +sane_close (SANE_Handle h) +{ + struct device *dev = h; + + if (!dev) + return; + + DBG (3, "%s: %p (%s)\n", __FUNCTION__, (void *)dev, dev->sane.name); + dev->io->dev_close(dev); +} + +SANE_Status +sane_open (SANE_String_Const name, SANE_Handle * h) +{ + struct device *dev; + + DBG (3, "%s: '%s'\n", __FUNCTION__, name); + + if (!devlist) + sane_get_devices (NULL, SANE_TRUE); + + if (!name || !*name) { + /* special case of empty name: open first available device */ + for (dev = devices_head; dev; dev = dev->next) { + if (dev->dn != -1) { + if (sane_open (dev->sane.name, h) == SANE_STATUS_GOOD) + return SANE_STATUS_GOOD; + } + } + } else { + for (dev = devices_head; dev; dev = dev->next) { + if (strcmp(name, dev->sane.name) == 0) { + *h = dev; + return dev->io->dev_open(dev); + } + } + } + + return SANE_STATUS_INVAL; +} + +SANE_Status +sane_get_parameters (SANE_Handle h, SANE_Parameters * para) +{ + struct device *dev = h; + + DBG (3, "%s: %p, %p\n", __FUNCTION__, h, (void *)para); + if (!para) + return SANE_STATUS_INVAL; + + *para = dev->para; + return SANE_STATUS_GOOD; +} + +/* check if image data is ready, and wait if not */ +/* 1: image is acquired, 0: error or non_blocking mode */ +static int dev_acquire(struct device *dev) +{ + if (!dev_cmd_wait(dev, CMD_READ)) + return dev->state; + + dev->state = SANE_STATUS_GOOD; + dev->vertical = dev->res[0x08] << 8 | dev->res[0x09]; + dev->horizontal = dev->res[0x0a] << 8 | dev->res[0x0b]; + dev->blocklen = dev->res[4] << 24 | + dev->res[5] << 16 | + dev->res[6] << 8 | + dev->res[7]; + dev->final_block = (dev->res[3] == MSG_END_BLOCK)? 1 : 0; + + dev->pixels_per_line = dev->horizontal; + dev->bytes_per_line = dev->horizontal; + + if (dev->composition == MODE_RGB24) + dev->bytes_per_line *= 3; + else if (dev->composition == MODE_LINEART || + dev->composition == MODE_HALFTONE) + dev->pixels_per_line *= 8; + + DBG (4, "acquiring, size per band v: %d, h: %d, %sblock: %d, slack: %d\n", + dev->vertical, dev->horizontal, dev->final_block? "last " : "", + dev->blocklen, dev->blocklen - (dev->vertical * dev->bytes_per_line)); + + if (dev->bytes_per_line > DATASIZE) { + DBG (1, "%s: unsupported line size: %d bytes > %d\n", + __FUNCTION__, dev->bytes_per_line, DATASIZE); + return ret_cancel(dev, SANE_STATUS_NO_MEM); + } + + dev->reading = 0; /* need to issue READ_IMAGE */ + + dev->dataindex = 0; + dev->datalen = 0; + dev->dataoff = 0; + + return 1; +} + +static int fill_slack(struct device *dev, SANE_Byte *buf, int maxlen) +{ + const int slack = dev->total_img_size - dev->total_out_size; + const int havelen = MIN(slack, maxlen); + int j; + + if (havelen <= 0) + return 0; + for (j = 0; j < havelen; j++) + buf[j] = 255; + return havelen; +} + +static int copy_plain_trim(struct device *dev, SANE_Byte *buf, int maxlen, int *olenp) +{ + int j; + const int linesize = dev->bytes_per_line; + int k = dev->dataindex; + *olenp = 0; + for (j = 0; j < dev->datalen && *olenp < maxlen; j++, k++) { + const int x = k % linesize; + const int y = k / linesize; + if (y >= dev->vertical) + break; /* slack */ + if (x < dev->para.bytes_per_line && + (y + dev->y_off) < dev->para.lines) { + *buf++ = dev->data[(dev->dataoff + j) & DATAMASK]; + (*olenp)++; + } + } + dev->dataindex = k; + return j; +} + +/* return: how much data could be freed from cyclic buffer */ +/* convert from RRGGBB to RGBRGB */ +static int copy_mix_bands_trim(struct device *dev, SANE_Byte *buf, int maxlen, int *olenp) { + int j; + + const int linesize = dev->bytes_per_line; /* caching real line size */ + + /* line number of the head of input buffer, + * input buffer is always aligned to whole line */ + const int y_off = dev->dataindex / linesize; + + int k = dev->dataindex; /* caching current index of input buffer */ + + /* can only copy as much as full lines we have */ + int havelen = dev->datalen / linesize * linesize - k % linesize; + + const int bands = 3; + *olenp = 0; + + /* while we have data && they can receive */ + for (j = 0; j < havelen && *olenp < maxlen; j++, k++) { + const int band = (k % bands) * dev->horizontal; + const int x = k % linesize / bands; + const int y = k / linesize - y_off; /* y relative to buffer head */ + const int y_rly = y + y_off + dev->y_off; /* global y */ + + if (x < dev->para.pixels_per_line && + y_rly < dev->para.lines) { + *buf++ = dev->data[(dev->dataoff + band + x + y * linesize) & DATAMASK]; + (*olenp)++; + } + } + dev->dataindex = k; + + /* how much full lines are finished */ + return (k / linesize - y_off) * linesize; +} + +SANE_Status +sane_read (SANE_Handle h, SANE_Byte * buf, SANE_Int maxlen, SANE_Int * lenp) +{ + SANE_Status status; + struct device *dev = h; + + DBG (3, "%s: %p, %p, %d, %p\n", __FUNCTION__, h, buf, maxlen, (void *)lenp); + + if (lenp) + *lenp = 0; + if (!dev) + return SANE_STATUS_INVAL; + + if (!dev->scanning) + return SANE_STATUS_EOF; + + /* if there is no data to read or output from buffer */ + if (!dev->blocklen && dev->datalen <= PADDING_SIZE) { + + /* and we don't need to acquire next block */ + if (dev->final_block) { + int slack = dev->total_img_size - dev->total_out_size; + + /* but we may need to fill slack */ + if (buf && lenp && slack > 0) { + *lenp = fill_slack(dev, buf, maxlen); + dev->total_out_size += *lenp; + DBG (9, "<> slack: %d, filled: %d, maxlen %d\n", + slack, *lenp, maxlen); + return SANE_STATUS_GOOD; + } else if (slack < 0) { + /* this will never happen */ + DBG(1, "image overflow %d bytes\n", dev->total_img_size - dev->total_out_size); + } + + /* that's all */ + dev_stop(dev); + return SANE_STATUS_EOF; + } + + /* queue next image block */ + if (!dev_acquire(dev)) + return dev->state; + } + + if (!dev->reading) { + if (cancelled(dev)) + return dev->state; + DBG (5, "READ_IMAGE\n"); + if (!dev_cmd(dev, CMD_READ_IMAGE)) + return SANE_STATUS_IO_ERROR; + dev->reading++; + dev->ulines += dev->vertical; + dev->y_off = dev->ulines - dev->vertical; + dev->total_data_size += dev->blocklen; + dev->blocks++; + } + + do { + size_t datalen; + int clrlen; /* cleared lines len */ + int olen; /* output len */ + + /* read as much data into the buffer */ + datalen = DATAROOM(dev) & USB_BLOCK_MASK; + while (datalen && dev->blocklen) { + SANE_Byte *rbuf = dev->data + DATATAIL(dev); + + DBG (9, "<> request len: %lu, [%d, %d; %d]\n", + (u_long)datalen, dev->dataoff, DATATAIL(dev), dev->datalen); + if ((status = dev->io->dev_request(dev, NULL, 0, rbuf, &datalen)) != + SANE_STATUS_GOOD) + return status; + dev->datalen += datalen; + dev->blocklen -= datalen; + DBG (9, "<> got %lu, [%d, %d; %d]\n", + (u_long)datalen, dev->dataoff, DATATAIL(dev), dev->datalen); + if (dev->blocklen < 0) + return ret_cancel(dev, SANE_STATUS_IO_ERROR); + + datalen = DATAROOM(dev) & USB_BLOCK_MASK; + } + + if (buf && lenp) { /* read mode */ + /* copy will do minimal of valid data */ + if (dev->para.format == SANE_FRAME_RGB && dev->line_order) + clrlen = copy_mix_bands_trim(dev, buf, maxlen, &olen); + else + clrlen = copy_plain_trim(dev, buf, maxlen, &olen); + + dev->datalen -= clrlen; + dev->dataoff = (dev->dataoff + clrlen) & DATAMASK; + buf += olen; + maxlen -= olen; + *lenp += olen; + dev->total_out_size += olen; + + DBG (9, "<> olen: %d, clrlen: %d, blocklen: %d/%d, maxlen %d (%d %d %d)\n", + olen, clrlen, dev->blocklen, dev->datalen, maxlen, + dev->dataindex / dev->bytes_per_line + dev->y_off, + dev->y_off, dev->para.lines); + + /* slack beyond last line */ + if (dev->dataindex / dev->bytes_per_line + dev->y_off >= dev->para.lines) { + dev->datalen = 0; + dev->dataoff = 0; + } + + if (!clrlen || maxlen <= 0) + break; + } else { /* flush mode */ + dev->datalen = 0; + dev->dataoff = 0; + } + + } while (dev->blocklen); + + if (lenp) + DBG (9, " ==> %d\n", *lenp); + + return SANE_STATUS_GOOD; +} + +SANE_Status +sane_start (SANE_Handle h) +{ + struct device *dev = h; + + DBG (3, "%s: %p\n", __FUNCTION__, h); + + dev->cancel = 0; + dev->scanning = 0; + dev->total_img_size = 0; + dev->total_out_size = 0; + dev->total_data_size = 0; + dev->blocks = 0; + + if (!dev->reserved) { + if (!dev_cmd_wait(dev, CMD_RESERVE_UNIT)) + return dev->state; + dev->reserved++; + } + + if (!dev_set_window(dev) || + (dev->state && dev->state != SANE_STATUS_DEVICE_BUSY)) + return dev_stop(dev); + + if (!dev_cmd_wait(dev, CMD_OBJECT_POSITION)) + return dev_stop(dev); + + if (!dev_cmd(dev, CMD_READ) || + (dev->state && dev->state != SANE_STATUS_DEVICE_BUSY)) + return dev_stop(dev); + + dev->scanning = 1; + dev->final_block = 0; + dev->blocklen = 0; + dev->pixels_per_line = 0; + dev->bytes_per_line = 0; + dev->ulines = 0; + + set_parameters(dev); + + if (!dev->data && !(dev->data = malloc(DATASIZE))) + return ret_cancel(dev, SANE_STATUS_NO_MEM); + + if (!dev_acquire(dev)) + return dev->state; + + /* make sure to have dev->para <= of real size */ + if (dev->para.pixels_per_line > dev->pixels_per_line) { + dev->para.pixels_per_line = dev->pixels_per_line; + dev->para.bytes_per_line = dev->pixels_per_line; + } + + if (dev->composition == MODE_RGB24) + dev->para.bytes_per_line = dev->para.pixels_per_line * 3; + else if (dev->composition == MODE_LINEART || + dev->composition == MODE_HALFTONE) { + dev->para.bytes_per_line = (dev->para.pixels_per_line + 7) / 8; + dev->para.pixels_per_line = dev->para.bytes_per_line * 8; + } else { + dev->para.bytes_per_line = dev->para.pixels_per_line; + } + + dev->total_img_size = dev->para.bytes_per_line * dev->para.lines; + + return SANE_STATUS_GOOD; +} + +SANE_Status sane_set_io_mode (SANE_Handle h, SANE_Bool non_blocking) +{ + struct device *dev = h; + + DBG (3, "%s: %p, %d\n", __FUNCTION__, h, non_blocking); + + if (non_blocking) + return SANE_STATUS_UNSUPPORTED; + + dev->non_blocking = non_blocking; + return SANE_STATUS_GOOD; +} + +SANE_Status sane_get_select_fd (SANE_Handle h, SANE_Int * fdp) +{ + DBG (3, "%s: %p, %p\n", __FUNCTION__, h, (void *)fdp); + /* supporting of this will require thread creation */ + return SANE_STATUS_UNSUPPORTED; +} + +void sane_cancel (SANE_Handle h) +{ + struct device *dev = h; + + DBG (3, "%s: %p\n", __FUNCTION__, h); + dev->cancel = 1; +} + +/* xerox_mfp.c */ |